What does the flashing red light on the Volkswagen Lamando water temperature gauge mean?

[XavierRose]

The flashing red light on the Volkswagen Lamando water temperature gauge indicates: There is an issue with the engine cooling system or a lack of coolant, which can lead to engine overheating and potentially cause cylinder scuffing or seizure. Introduction to the car water temperature gauge: The sensor of the car water temperature gauge is a thermistor-type sensor. It is fixed with threads on the engine cooling water passage. The thermistor determines the current flowing through the coil winding of the water temperature gauge, thereby driving the pointer to swing. In the past, tap water was used as the cooling fluid for car engines, but now many engine cooling systems use specialized coolant, hence it is also referred to as the coolant temperature gauge. Introduction to the water temperature sensor: When the water temperature sensor malfunctions, it often displays the temperature signal from when the engine was hot during a cold start. The ECU cannot obtain the correct signal and can only supply the engine with a leaner air-fuel mixture, making it difficult to start the engine when cold. It may also be accompanied by unstable idle operation and insufficient acceleration power.